Striking Distance
Mostrando 1-12 de 44 artigos, teses e dissertações.
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1. O modelo SLIM (\"Self-Consistently Interception Model\") para estimativa da incidência de descargas atmosféricas em estruturas - avaliação e aplicação na análise do desempenho de linhas de transmissão de energia / The Self-consistently Interception Model (SLIM) for estimating the lightning incidence to structures evaluation of the model and application to the analysis of lightning performance of power transmission lines
O desempenho de uma linha de transmissão de energia está diretamente ligado ao número médio anual de descargas que nela incidem, o qual depende da densidade média de descargas ao solo na região e também do grau de exposição da linha. Modelos com diferentes graus de complexidade são encontrados na literatura para a estimativa da área de atração d
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 19/04/2012
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2. Molecular and phylogenetic analysis of the partial tams1 gene sequence of a vaccine strain of Theileria annulata
The polypeptide Tams1 is an immunodominant major merozoite piroplasm surface antigen of the protozoan parasite Theileria annulata and is highly variable. In this study, the partial nucleotide (nt) sequence of the Tams1 (522 nt) gene of Iranian vaccine strain (Vaccine-ir68) recovered from an outbreak of disease in Iran was determined and compared with the cor
Brazilian Archives of Biology and Technology. Publicado em: 2011-12
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3. Comunidade de morcegos em uma paisagem fragmentada da Mata Atlantica do Sul da Bahia, Brasil
The process of forest conversion on the tropical fragmented and disturbed landscapes is considered a major cause leading to the present high rates of extinction. The present study attempted to investigate the impact of forest fragmentation in a landscape of the Atlantic forest located in the southern part of the State of Bahia, Northeastern Brazil. Forest st
Publicado em: 2002
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4. Characterization of the blue copper site in oxidized azurin by extended x-ray absorption fine structure: Determination of a short Cu—S distance
The primary coordination environment of the “blue” copper ion in oxidized azurin has been elucidated by x-ray absorption spectroscopy. The most striking feature is the unambiguous presence of a very short copper-sulfur distance at 2.10 ± 0.02 Å. Nitrogen ligands, presumed to be from imidazoles, are found at 1.97 Å. There is some evidence that the copp
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5. Distance preferences in the arrangement of binding motifs and hierarchical levels in organization of transcription regulatory information
We explored distance preferences in the arrangement of binding motifs for five transcription factors (Bicoid, Krüppel, Hunchback, Knirps and Caudal) in a large set of Drosophila cis-regulatory modules (CRMs). Analysis of non-overlapping binding motifs revealed the presence of periodic signals specific to particular combinations of binding motifs. The most s
Oxford University Press.
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6. Two motion perception mechanisms revealed through distance-driven reversal of apparent motion
We demonstrate two kinds of visual stimuli that exhibit motion in one direction when viewed from near and in the opposite direction from afar. These striking reversals occur because each kind of stimulus is constructed to simultaneously activate two different mechanisms: a short-range mechanism that computes motion from space-time correspondences in stimulus
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7. A closed curve is much more than an incomplete one: effect of closure in figure-ground segmentation.
Detection of fragmented closed contours against a cluttered background occurs much beyond the local coherence distance (maximal separation between segments) of nonclosed contours. This implies that the extent of interaction between locally connected detectors is boosted according to the global stimulus structure. We further show that detection of a target pr
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8. A histoquantitative study on the effects of castration on the rat ventral prostate lobe.
The effects of castration on the rat ventral prostate was studied utilizing an improved histoquantitative technique. Both volumetric fractions of the tissue compartments and their fractional weights, or, 'total amounts', were calculated during an observation period of 30 days. In addition, the surface area, length and mean diameter of the glandular tubules w
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9. Long-term memory for a life on the move
Evidence is accumulating that cognitive abilities are shaped by the specific ecological conditions to which animals are exposed. Long-distance migratory birds may provide a striking example of this. Field observations have shown that, at least in some species, a substantial proportion of individuals return to the same breeding, wintering, and stopover sites
The National Academy of Sciences.
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10. Capillary number and percentage closed in human diabetic sural nerve.
The number of capillaries per mm2, minimum intercapillary distance, number of endothelial nuclei per capillary section, and percentage of capillaries closed were evaluated in transverse sections of fascicles of 45 control and 36 diabetic sural nerves. All controls and patients were prospectively studied to ascertain their diabetic and neuropathic status. An
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11. Multigene families in African swine fever virus: family 505.
Sequencing of restriction fragment EcoRI A-SalI C of African swine fever virus has revealed the existence of a multigene family, designated family 505 because of the average number of amino acids in the proteins, composed of seven homologous and tandemly arranged genes. All the genes of family 505 are expressed during infection. Primer extension analysis sho
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12. Maximum Likelihood Estimation of Linkage and Interference from Tetrad Data
Maximum likelihood equations have been derived for estimation of map distance and interference from two-point and ranked tetrad data. The estimators have been applied to data from Saccharomyces cerevisiae and Schizosaccharomyces pombe. S. cerevisiae consistently shows quite strong interference over the mapped genome. In striking contrast, S. pombe consistent